1 <!DOCTYPE html>
2 <html>
3 <head>
4 <title>css</title>
5 <style type="text/css">
6 div {
7 width: 100px;
8 height: 100px;
9 border: 1px solid #000;
10 padding: 20px;
11 }
12
13 #a {
14 background: #eee;
15 }
16
17 #b {
18 background: #ccc;
19 margin-top: 20px;
20 }
21
22 #a:hover + #b {
23 background: #f00;
24 }
25 </style>
26 </head>
27
28 <body>
29 <div id="a">hover here</div>
30 <div id="b">see me</div>
31 </body>
32 </html>
时间： 2024-12-13 21:51:16